Blueberry is one of the major health foods, which is susceptible to microbial contamination during the postharvest storage period. More seriously, the gray mold caused by Botrytis cinerea (B. cinerea) is a major postharvest disease of blueberries. Atmospheric cold plasma (ACP) holds a great potential as an efficient, economical and ecofriendly method for food sterilization. Herein, this study investigated the effects of ACP treatment with different time (0, 5, 10, 15 and 20 min) on the natural decay, gray mold decay caused by B. cinerea, and postharvest quality of blueberries (Vaccinium corymbosum L.) during 10-d storage at 25 ± 2 °C. The results showed that ACP treatment inhibited the native microbial growth and natural decay of blueberries during the storage period. Meanwhile, ACP treatment also exhibited marked inhibitory effects on the spore germination and mycelial growth of B. cinerea in vitro, and gray mold decay in blueberries inoculated with B. cinerea during the postharvest storage. For the postharvest quality, the short-time ACP treatment (≤ 15 min) had minor effects on the firmness, pH, ORP and anthocyanin concentration, but darkened the color and decreased lipid peroxidation, which overall improved the postharvest quality. However, 20-min ACP treatment caused severe oxidative damage to the blueberry peels, resulting in the fruit softening and anthocyanin decrease. Taken together, these results indicate that the short-time ACP treatment may be a promising candidate for the postharvest preservation of blueberries by trading-off between the microbial decay and postharvest quality.

蓝莓是主要的健康食品之一，在收获后的存储期间容易受到微生物的污染。更严重的是，由灰葡萄孢（B.cinerea）引起的灰霉病是蓝莓的主要收获后疾病。大气冷等离子体（ACP）作为一种高效，经济，环保的食品灭菌方法具有巨大的潜力。在此，本研究调查了在不同时间（0、5、10、15和20分钟）进行ACP处理对由灰质双歧杆菌引起的自然衰变，灰霉菌衰变以及蓝莓（越橘的收获后）品质的影响。L.）在25±2°C下储存10天。结果表明，在贮藏期间，ACP处理抑制了蓝莓的天然微生物生长和自然腐烂。同时，ACP处理对灰葡萄孢的体外萌发和菌丝体生长也具有显着的抑制作用，而接种灰葡萄的蓝莓灰霉菌的腐烂也很明显。在收获后的存储过程中。对于收获后的品质，短时ACP处理（≤15分钟）对硬度，pH，ORP和花色苷浓度影响不大，但颜色变深，脂质过氧化作用降低，总体上改善了收获后的品质。然而，20分钟的ACP处理对蓝莓皮造成了严重的氧化损伤，导致果实软化和花色苷减少。综上所述，这些结果表明，通过在微生物腐烂和收获后质量之间进行权衡，短期ACP处理可能成为蓝莓收获后保存的有前途的候选者。